VBA Data Types: An In-depth Guide to 'As Double'

In VBA, 'Double' is a data type that can store very large or small numbers and precise decimal places. When declaring a variable 'As Double', you enable it to hold values from -1.79769313486231570E+308 to -4.94065645841246544E-324 for negative values, 4.94065645841246544E-324 to 1.79769313486231570E+308 for positive values.

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Using 'As Double' in VBA

Here is a step-by-step guide on how to use 'As Double' in VBA:

STEP 1. Open Excel and press Alt + F11 to access the VBA Editor.

STEP 2. In the VBA Editor, select Insert > Module to create a new module.

STEP 3. Now, declare a variable 'As Double' and use it in your code. Here's a simple example:

Sub UseDouble()
    Dim radius As Double
    Dim area As Double

    radius = 5.35
    area = 3.1415 * radius ^ 2

    MsgBox "The area of the circle is " & area
End Sub

This code declares radius and area as Double. When you run this Sub, it calculates the area of a circle with the radius 5.35 and then displays the result in a message box.

STEP 4. Close the VBA Editor. You can now run the UseDouble macro in your Excel workbook.

STEP 5. Check your results. Make this a habit when using Micrsoft Excel in order to always ensure accuracy!

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Understanding the 'As Double' data type and its usage is crucial for working with numbers in VBA that need high precision or that are extremely large or small. For more information about VBA data types, visit this link. This tutorial explains the VBA data type 'As Double' and how to use it in your code. With this knowledge, you can work with high precision numbers or extremely large or small numbers in VBA.